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Model A1419 / EMC 3070 / Mid 2017 / 3.4, 3.5 or 3.8 GHz Core i5 or 4.2 GHz Core i7 Kaby Lake Processor (ID iMac18,3) / Retina 5K Display. Benutze die Anleitungen des iMac Intel 27" Retina 5K Display (Ende 2014 & 2015), da das Gerät sehr ähnlich ist.

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iMac 27 “ 5k 2015 half screen rebooting every mint

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Hello everyone!

any help with this issue please?

Diese Frage beantworten Ich habe das gleiche Problem

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Hilfreichste Antwort

Ouch! You damaged the display in taking it off. Did you use the proper tools and techniques from our guide here iMac 27" 2017 Display tauschen and the pizza tool in this kit iMac Intel 27" (2012-2019) Adhesive Strips as well as the Plastic Cards

Plastic Cards Bild


Plastic Cards


iMac Intel 27" (2012-2019) Adhesive Strips Bild


iMac Intel 27" (2012-2019) Adhesive Strips


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Thanks for replaying,

I have removed the LCD professionally but this issue was there before I removed the LCD and I was the first who removed it, does this mean I need a new LCD?

If so, then why when I use an external monitor I don’t get a picture?

Also, when I start the iMac in Safe Mode it works and no issue with the LCD!


@iphix - It would have been helpful getting this additional detail before now.

Your system has two GPU units the discreet AMD Radeon GPU and the integrated one within the Intel CPU, HD Graphics 630. So when you are in Safe Mode you are using the Intel integrated Graphics.

So you appear to have a bad AMD GPU. This will require a new logic board.


@danj Thank you Dan This what I thought as well at least, my LCD is not damaged :)


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Justin wird auf ewig dankbar sein.

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